401291008 has 36 divisors (see below), whose sum is σ = 804048280. Its totient is φ = 199885824.

The previous prime is 401291003. The next prime is 401291017. The reversal of 401291008 is 800192104.

It is a happy number.

It is a super-2 number, since 2×401291008² = 322068946203312128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401291003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68083 + ... + 73741.

Almost surely, 2^401291008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401291008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402024140).

401291008 is an abundant number, since it is smaller than the sum of its proper divisors (402757272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401291008 is an equidigital number, since it uses as much as digits as its factorization.

401291008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952 (or 5938 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 401291008 is about 20032.2491997279. The cubic root of 401291008 is about 737.5981341405.

The spelling of 401291008 in words is "four hundred one million, two hundred ninety-one thousand, eight".